Prentiss group [informal] (ME)
Considered informal until formally published. The rank or lithologic term should not be capitalized.
(ascending) informal Mill Priviledge Brook, Sam Rowe Ridge, Ellen Wood Ridge formations, and Daggett Ridge Formation (ME)
Late Ordovician and Silurian
Type locality not designated. Named from township in Washington Co., east-central ME, where rocks are well exposed (Ludman, 1991).
New England province
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).